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package open.algo.sort;

import java.util.PriorityQueue;

/**
 *
 * @author lee
 */
public class Main {
    public static void main(String[] args)
    {
        PriorityQueue<Integer> v = new PriorityQueue<Integer>();
        Integer i1 = null;
        v.add(i1);
        v.add(new Integer(1));

        System.out.println(v.size());
    }

}
